1 /*-
2 * (MPSAFE)
3 *
4 * Copyright (c) 1995-1998 Søren Schmidt
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * $FreeBSD: src/sys/modules/syscons/fade/fade_saver.c,v 1.18 1999/08/28 00:47:47 peter Exp $
31 * $DragonFly: src/sys/dev/misc/syscons/fade/fade_saver.c,v 1.4 2007/08/15 19:31:11 swildner Exp $
32 */
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/consio.h>
39 #include <sys/fbio.h>
40 #include <sys/thread.h>
41
42 #include <dev/video/fb/fbreg.h>
43 #include <dev/video/fb/splashreg.h>
44 #include "../syscons.h"
45
46 static u_char palette[256*3];
47 static int blanked;
48
49 static int
fade_saver(video_adapter_t * adp,int blank)50 fade_saver(video_adapter_t *adp, int blank)
51 {
52 static int count = 0;
53 u_char pal[256*3];
54 int i;
55
56
57 if (blank) {
58 blanked = TRUE;
59 if (ISPALAVAIL(adp->va_flags)) {
60 if (count <= 0)
61 save_palette(adp, palette);
62 if (count < 256) {
63 pal[0] = pal[1] = pal[2] = 0;
64 for (i = 3; i < 256*3; i++) {
65 if (palette[i] - count > 60)
66 pal[i] = palette[i] - count;
67 else
68 pal[i] = 60;
69 }
70 load_palette(adp, pal);
71 count++;
72 }
73 } else {
74 (*vidsw[adp->va_index]->blank_display)(adp,
75 V_DISPLAY_BLANK);
76 }
77 } else {
78 if (ISPALAVAIL(adp->va_flags)) {
79 load_palette(adp, palette);
80 count = 0;
81 } else {
82 (*vidsw[adp->va_index]->blank_display)(adp,
83 V_DISPLAY_ON);
84 }
85 blanked = FALSE;
86 }
87 return 0;
88 }
89
90 static int
fade_init(video_adapter_t * adp)91 fade_init(video_adapter_t *adp)
92 {
93 if (!ISPALAVAIL(adp->va_flags)
94 && (*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) != 0) {
95 return ENODEV;
96 }
97 blanked = FALSE;
98 return 0;
99 }
100
101 static int
fade_term(video_adapter_t * adp)102 fade_term(video_adapter_t *adp)
103 {
104 return 0;
105 }
106
107 static scrn_saver_t fade_module = {
108 "fade_saver", fade_init, fade_term, fade_saver, NULL,
109 };
110
111 SAVER_MODULE(fade_saver, fade_module);
112